Pune, India · Senior Android Engineer
platform owner · 50k+ MAU fintech · 5 platforms · one Kotlin codebase · GPS 50% → 95% · crashes -80% · an engineer who writes
5+ years building production Android. I own the platform behind a ~964k-LOC financial SaaS app serving 50,000+ monthly users — I joined it with zero Kotlin in the codebase, and ~87% of the UI layer is Compose today. Location accuracy, crash-free sessions, architecture a team can move fast in.
Open to remote (worldwide / India) and hybrid in Pune / Bengaluru
// one codebase
These are the real Kotlin Multiplatform builds, compiled to Wasm and served from this domain. Change the form factor and the Compose layout re-flows at the same window size classes the code branches on.
Kursi · Phone · compact · <600dp
// fit check
My AI assistant reads it against what I've actually shipped and answers the only question that matters: where I fit, and where I don't. No score inflation — the gaps come with the strengths.
// featured work
The work behind the numbers. Ask the chatbot for more depth on any of these.
46 modules · 5 platforms · offline AI
An open-source app I designed and built end-to-end: mileage, travel & expense tracking that runs entirely offline across Android, iOS, Wear OS, watchOS and Compose Desktop from one shared Kotlin codebase. Zero backend — Room + DataStore only — so the whole thing is reproducible and reviewable by anyone.
50% → 95%
Field users' trip distances were off by large margins from urban canyons, tunnels, and OEM-throttled location updates.
Tracking accuracy rose from 50% to 95% via staged dead reckoning plus Kalman smoothing, making mileage reliable enough for expense reimbursement.
-80% crashes
A fast-growing ~964k-LOC app had a crash rate hurting its Play Store rating, driven by untraceable threading bugs.
Crashes fell 80% at 22k DAU; Play Store went 1.6★/67 reviews to 4.5★/27.3K — closing 85% of the gap to a perfect 5.0, +181% rating, 407x review volume.
~87% UI-layer Compose
XML views made UI changes slow and inconsistent, and design's theming requests meant touching dozens of files.
Reached ~87% UI-layer Compose coverage (455k of 523k LOC) verified per-screen against the legacy XML baseline; UI development friction dropped 60%.
858 branches · 80% faster delivery
Every new white-label client meant manually forking, rebranding, and re-releasing the app: weeks of error-prone work, and the constraint that mattered was not building the feature once — it was doing that without forking the codebase per tenant.
858 white-label-named branches across two Android repos carry my commits (459 autos, 399 driver, a subset of the 1,179 total) spanning 150+ client codebases, with delivery time cut 80% versus manual per-client builds.
// projects & open source
Open-source projects and tooling outside employer work — shipped end-to-end.
A Hinglish social-deduction bluffing game of power, satire & second chances. Kursi ke liye kuch bhi karega.
◇ 13 modules · 4 platforms
Deterministic Kotlin Multiplatform social-deduction game with ISMCTS bot AI, shipped across Android, iOS, Desktop, and Web.
Offline-first mileage, travel & expense tracker on one Kotlin codebase across Android, iOS, Wear OS, watchOS & Desktop.
◇ 36 modules · 13 features · 368 tests
Offline-first mileage, travel, and expense tracker spanning five platforms from one Kotlin codebase, zero backend.
An Integration Lab for the Android payments ecosystem: every gateway behind one abstraction, with a live look at what actually happens on each transaction.
◇ 40 modules · 66 gateways
A Kotlin Multiplatform systems showcase: real payment flows across dozens of providers, all behind a single PaymentGateway abstraction, backed by a Ktor server that owns order creation, signature verification and webhook reconciliation.
A native, multiplatform AI career-intelligence engine, and the open-source project it's built on.
A local-first job-search engine — resume onboarding, reverse-ATS discovery, evidence-based fit scoring and tailored résumés — rebuilt from scratch in Kotlin Multiplatform, with its scoring engine ported and verified against the open-source career-ops project I actively contribute to upstream.
The site you're reading, plus Panda the assistant that answers for me — and the whole thing rebuilt a second time in Compose Multiplatform, one commonMain to Web, Desktop, Android and iOS.
An interactive résumé built twice, on purpose. The React 19 original runs on Vercel Edge with a provider-agnostic LLM assistant grounded in this same profile data. The Compose Multiplatform port renders the same portfolio from 16.2k lines of Kotlin to Kotlin/Wasm, Desktop, Android and iOS — an honest test of how far CMP reaches on the web, including where it doesn't.
A first-person time-loop game about a moment someone could not let end.
Godot 4.7 in GDScript. A deterministic echo-replay spine — recorded input intent replays through the same physics step — powers cooperative echoes, ghosts, and boss desync from one system. Built solo as an AI-orchestrated dev crew.
Three decoupled repos so a new app starts at "write the feature".
The reusable libraries, the shared build logic and the app shape each live in their own repo — vendored into five consumers via Gradle includeBuild, so a version bump happens once instead of per project.
Field notes from an engineer who writes: one war story, four channels, one branded card.
A dev-content engine and writing archive. A lesson pulled from a real project is written once and adapted to LinkedIn, dev.to, Hashnode and Medium, each with a generated branded graphic — plus the consolidated back catalogue.
Mileway and PaymentsLab aren't two isolated demos — they're two KMP apps sitting on a common foundation I built and maintain separately. Both pull in my own convention-plugin and MVI-base libraries as composite builds, so the build wiring and the unidirectional-state contract are written once and reused, exactly the platform discipline I bring to a codebase at scale.
↓ both libraries are in , one click from the code.
// the source
Every app, the libraries they share, the tooling, and the upstream PRs — open, and one click away. The numbers are pulled from each repo, not typed by hand.
A 5-surface fintech from one Kotlin codebase — dead-reckoning location engine with Kalman smoothing and IMU motion filtering, reimbursement-policy layer, durable submit-outbox and an offline on-device AI assistant.
36 modules · 13 features · 159 tests
A payments lab beyond one-shot pay-in: payouts, mandates, a card vault, marketplace Connect and a double-entry wallet ledger — every rail MOCK_MODE-honest.
39 modules · 71 gateways · 5 rails
A deterministic social-deduction engine — one pure (GameState, Intent) → GameState reducer driving ISMCTS bots, the UI and a server, identical on four platforms.
13 modules · 4 platforms · 10 AI personas
Gradle convention plugins — one place that configures every KMP module's targets, Compose, lint and test wiring.
composite build · Mileway + PaymentsLab
The (State, Event) → Effects mvi-core base — the reducer/store contract the payments state machine is built on — plus shared feedback modules.
the contract the apps share
Field notes on the hard parts — the essays behind the case studies, versioned like code.
the story behind the numbers
React 19 + Vite + a provider-agnostic LLM chat grounded in this CV — plus every interactive world you're clicking through.
you're looking at it
Jul 2026
Mileway — super-profile & plugin platform (V24)
A plugin-composition registry (TILE/CAPABILITY/VALUE, FORCED>USER>PRESET>DEFAULT layering) driving four persona presets, plus delegation, verification, growth, membership and wallet/payout depth — shipped, with a V25→V37 series (on-device intelligence, JWT auth, closeout hardening, home cards/advances, What's New) landed on top.
Jul 2026
Shared KMP foundation
Extracted kmp-build-logic (convention plugins) and kmp-toolkit (MVI base) as my own libraries, consumed by Mileway and PaymentsLab as composite builds.
Jul 2026
PaymentsLab — 5 rails + 66 gateways
40-module KMP payments lab: payouts, mandates, card vault, marketplace Connect and a double-entry wallet ledger beyond one-shot pay-in — all MOCK_MODE-honest.
Jul 2026
Mileway — offline AI + policy engine
Retrieval-grounded chat over local data with voice I/O, a reimbursement-rate policy engine and a durable submit-outbox — still zero backend.
// on the store
Shipped Android work, live on Google Play. Every rating and install count below was read from the listing itself, not quoted.
Dice.techDice Employee HQTechnical owner & Product Owner4.5stars100K+installs
JugnooJugnooAndroid developer4.5stars5M+installs
JugnooJugnoo DriversAndroid developer4.6stars1M+installsThe Jugnoo rider and driver apps were a white-label platform: every client got its own build of the same codebase, its own branding, and its own listing on Play under its own company. I worked on it for two and a half years and never had a list of what came out of it — so I put one together, and kept only the apps the store itself shows were still shipping while I was there or after.
// background
// not a PDF with a pulse
A running program, not a slide deck: Eight interactive rooms, each a small proof of the engineering above — plus 18,827 rated and casual chess games, mined and analysed at build time. The chess finding was not flattering: 41.7% of my decided games ended on a clock, not on a board.
the numbers, and what verifies them
The Lab Benchcanvas · physicsDesktopEleven experiments that prove the numbers — Dice.tech production metrics, five personal builds and seven years of chess — running in your browser.
The 3D Storyboard3D · graphDesktopThe projects and the ideas that connect them, as a constellation you can orbit — every edge is a real dependency.
Hire90 secondsPhoneSenior Android engineer, platform owner of a ~964k-LOC app serving 50,000+ monthly users. GPS accuracy 50%→95%, crashes down 80%. Résumé, numbers, contact.
Résuméprint · pdfDesktopThe résumé as a page, not a download — no chrome, no nav, printed to PDF straight from the browser. The artifact that actually leaves this site.
The Shelfstore · verifiedPhoneEvery Android app that reached the Play Store from work he touched — three at Dice and Jugnoo, the rest white-label clients of the platform he worked on, each one verified against its live listing.
The Pulsetelemetry · liveWidgetA live count of what visitors actually touch across this portfolio — which rooms get opened, what gets played with, and what nobody has found yet.real programs, in the page
Compose Playgroundlive editor · AIPhoneWrite Jetpack Compose, watch it recompose live in a phone frame — reactive state, animation, and an AI that writes it for you.
The Blueprint Room3D · WebGLDesktopThe whole portfolio as an infinite canvas — a real-time 3D fly-through, an ASCII render of the same scene, and a sketchable whiteboard.
The Particle Forgecanvas · interactiveWebA few thousand particles, each spring-tied to a letter, parting around your cursor and snapping back. Physics on a canvas.
The Terminaltext · easter eggDesktopA faux shell you can actually type in — ls the site, cat a project, or hit the backtick key from anywhere.long records, read as evidence
The Board3d · engineTabletSeven years of games across lichess and chess.com, mined: the rating arc in 3D, where games end, a shifting repertoire, and a bot that plays like me.
Weeb Centralcorpus · dataTVYears of anime and manga kept by hand, read as evidence: a status column with no word for quitting, a score scale whose bottom half is unused, and the seasons that aired while the list wasn't looking.before the code, and alongside it
The Inkarchive · worldTablet2019 :: 2026The writing years — three editions of MANIT's institute magazine, a literary society, four published stories, and everything written before the code.
Excelsior396 pagesTablet2021 :: 2026Three editions of MANIT Bhopal's institute magazine, readable here in full — English Editor on 2019 and 2020, Joint Chief Editor on 2021.
The Loopdownfield notesPhoneField notes from building production Android — what broke, what the fix actually was, and the numbers on either side of it.// before the code
Before the Android work there were three years of a college magazine and a literary society — English Editor, then Joint Chief Editor of a 128-page edition shipped entirely remotely. Four published stories, all readable here, and the pieces the board wrote about me. It's a different life, so it gets a different room.
// tech stack
Filter by area, spin the orbit, or just hover the cloud.
Ask my AI assistant anything about my work, or reach out directly — I reply fast.
siddharthpandalai990@gmail.com
